Middle English
n.
The English language from about 1100 to 1500.

Old English
n.
1. The English language from the middle of the 5th to the beginning of the 12th century. Also called Anglo-Saxon.
2. Printing See black letter.

In·do-Eu·ro·pe·an (nd-yr-pn)
n.
1.
a. A family of languages consisting of most of the languages of Europe as well as those of Iran, the Indian subcontinent, and other parts of Asia.
b. Proto-Indo-European. Also called Indo-Germanic.
2. A member of any of the peoples speaking an Indo-European language.

past tense
n.
A verb tense used to express an action or a condition that occurred in or during the past. For example, in While she was sewing, he read aloud, was sewing and read are in the past tense.

Old Norse
n.
1. The North Germanic languages until the middle of the 14th century.
2.
a. Old Icelandic.
b. Old Norwegian.